CN106371074B - A kind of series connection multichannel array Ground Penetrating Radar time sequence control device and method - Google Patents
A kind of series connection multichannel array Ground Penetrating Radar time sequence control device and method Download PDFInfo
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- CN106371074B CN106371074B CN201611098515.5A CN201611098515A CN106371074B CN 106371074 B CN106371074 B CN 106371074B CN 201611098515 A CN201611098515 A CN 201611098515A CN 106371074 B CN106371074 B CN 106371074B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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Abstract
The invention discloses a kind of series connection multichannel array Ground Penetrating Radar time sequence control device and methods, the device includes: microcomputer, the step motion control module being electrically connected by FPGA with microcomputer, after microcomputer issues channel relevant configured parameter to FPGA, shooting sequence parameter and reception sequence parameter are handed down to transmitting gating switch and reception gating switch respectively, the relevant configured parameter in channel are handed down to step motion control module etc. by FPGA.Series connection multichannel array Ground Penetrating Radar time sequence control device disclosed in this invention and method, using the N channel acquisition system of tandem timing control mode only by a step motion control module, one analog-digital converter and the gating switch on 3 roads N composition, the antenna echo in N number of channel is together in series by control gating switch, each channel time-sharing work within a scan period.In the case where less port number (not more than 8), component number is less, has the characteristics that small in size, at low cost, small power consumption and control are flexible, can control transmitting unit and receiving unit work in array in any order.
Description
Technical field
The present invention relates to engineering geophysics field more particularly to a kind of series connection multichannel array Ground Penetrating Radar time sequence control devices
And method.
Background technique
Multichannel array Ground Penetrating Radar can expand scanning area, by combining multiple-look technique and SAR processing technique can be with
It realizes Imaging of Underground Objects, is the more Detection Techniques in forward position in engineering geophysics field.The timing control of array Ground Penetrating Radar at present
System mostly uses control mode in parallel, the control mode be by N number of independent step motion control module and N number of analog-digital converter simultaneously
Connection, forms N number of acquisition channel, each acquisition channel is made of a stepping sampling control module and an analog-digital converter,
Each acquisition channel time-sharing work within a scan period.Although Parallel Control mode has timing control simply and more
The advantages of can be realized high speed acquisition in the case where port number, but its that there is also hardware costs is higher, system bulk is big and function
Consume big disadvantage.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of series connection multichannels small in size, at low cost and small power consumption
Array Ground Penetrating Radar time sequence control device and method.
The present invention adopts the following technical scheme:
A kind of series connection multichannel array Ground Penetrating Radar time sequence control device, it is improved in that the device includes:
Microcomputer, the step motion control module being electrically connected by FPGA with microcomputer, microcomputer issue channel correlation and match
After parameter is set to FPGA, FPGA is respectively handed down to shooting sequence parameter and reception sequence parameter transmitting gating switch and receives and selects
It opens up pass, the relevant configured parameter in channel be handed down to step motion control module, step motion control module generates match related to the channel
Set transmitting trigger signal sequence that parameter matches and receive trigger signal sequence, wherein transmitting trigger signal sequence by two groups with
Upper transmitting trigger signal is composed in series, receives trigger signal sequence is composed in series by reception trigger signal more than two；It is connected with
When the transmitting gating switch of two or more transmitters is electrically connected with FPGA, the synchronization signal from FPGA occurs, transmitting gating is opened
It closes the shooting sequence that sets according to FPGA to distribute each transmitting trigger signal to corresponding transmitter, above-mentioned transmitter is and array
Antenna electrical connection, the reception gating switch for being connected with two or more receivers is electrically connected with FPGA, the synchronization signal from FPGA
When appearance, receives the reception sequence that gating switch is set according to FPGA and distribute each reception trigger signal to corresponding receiver, on
The receiver stated is electrically connected with array antenna, and echo gating switch in sequence connects the echo-signal from receiver,
Antenna echo after series connection is converted to digital signal by analog-digital converter, and FPGA is each according to shooting sequence and reception sequence notation
Channel echo-signal, the content of label are that the antenna echo in the channel is generated by which transmitter and which receiver
, microcomputer is according to the every channel antenna echo of the corresponding pickup of the information marked and is sent to corresponding channel data display window
Display output.
Further, the quantity of the transmitter and receiver is identical, is to be less than or equal to 8 more than or equal to 2.
A kind of series connection multichannel array Ground Penetrating Radar sequential control method is included the following steps: using above-mentioned device
(1) microcomputer issues channel number, shooting sequence, reception sequence and the relevant configuration parameter in each channel
To FPGA, FPGA shooting sequence parameter and receive sequence parameter respectively be handed down to transmitting gating switch and receive gating switch,
The parameter received is handed down to step motion control module, step motion control module generates the transmitting triggering to match with configuration parameter and believes
Number sequence and trigger signal sequence is received, wherein transmitting trigger signal sequence is composed in series by N group transmitting trigger signal, receives and touch
Signalling sequence receives trigger signal by N group and is composed in series；
(2) FPGA is controlled by synchronization signal and is gated according to channel number set by user, shooting sequence and reception sequence
Switch realizes the distribution of trigger signal, when synchronization signal occurs, emits gating switch respectively by first group of transmitting trigger signal
Distribute to transmitter 1, second group of transmitting trigger signal distributes to transmitter 2, and so on N group transmitting trigger signal distribute to
Transmitter N, similarly receive gating switch also by receive trigger signal distribute in this manner, in this way distribute after must: a channel by
Transmitter 1 and receiver 1 form, and two channels are made of transmitter 2 and receiver 2, and so on N channel by transmitter N and connect
Receipts machine N composition；
(3) echo gating switch turns according to being together in series from 1 to the signal that N channel sequence receives receiver through modulus
Parallel operation is sent into microcomputer, and FPGA is according to shooting sequence and receives each channel echo-signal of sequence notation, the content of label
Antenna echo for the channel generated by which transmitter and which receiver, and microcomputer is according to being marked
Information is corresponding to pick up every channel antenna echo and is sent to the display output of corresponding channel data display window.
Further, in step (1), the relevant configuration parameter in each channel includes time window, scan period, sample point
Number.
Further, in step (1)-(3), the numerical value of N is equal, is the natural number more than or equal to 2, less than or equal to 8.
The beneficial effects of the present invention are:
Series connection multichannel array Ground Penetrating Radar time sequence control device disclosed in this invention and method, using tandem timing
The N channel acquisition system of control mode is only by a step motion control module, the gating switch of an analog-digital converter and 3 roads N
The antenna echo in N number of channel is together in series by composition by control gating switch, the timesharing within a scan period of each channel
Work.In the case where less port number (not more than 8), component number is less, has small in size, at low cost, small power consumption
The flexible feature with control can control transmitting unit and receiving unit work in array in any order.
Detailed description of the invention
Fig. 1 is the circuit connection of series connection multichannel array Ground Penetrating Radar time sequence control device disclosed in the embodiment of the present invention 1
Structural schematic diagram；
Fig. 2 is the timing control of series connection multichannel array Ground Penetrating Radar sequential control method disclosed in the embodiment of the present invention 1
Figure.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.
Embodiment 1, as shown in Figure 1, present embodiment discloses a kind of series connection multichannel array Ground Penetrating Radar timing control dresses
It sets, the device includes: microcomputer, the step motion control module being electrically connected by FPGA with microcomputer, microcomputer
After calculation machine issues channel relevant configured parameter to FPGA, shooting sequence parameter and reception sequence parameter are handed down to hair by FPGA respectively
It penetrates gating switch and receives gating switch；The relevant configured parameter in channel is handed down to step motion control module, step motion control module
It generates the transmitting trigger signal sequence to match with the channel relevant configured parameter and receives trigger signal sequence, wherein transmitting touching
Signalling sequence is composed in series by transmitting trigger signal more than two, receives trigger signal sequence and triggered by reception more than two and believed
It number is composed in series；The transmitting gating switch for being connected with two or more transmitters is electrically connected with FPGA, the synchronization signal from FPGA
When appearance, the shooting sequence that transmitting gating switch is set according to FPGA distributes each transmitting trigger signal to corresponding transmitter, on
The transmitter stated is electrically connected with array antenna, the reception gating switch for being connected with two or more receivers is electrically connected with FPGA,
When synchronization signal from FPGA occurs, receives the reception sequence that gating switch is set according to FPGA and divide each reception trigger signal
It is assigned to corresponding receiver, above-mentioned receiver is electrically connected with array antenna, and echo gating switch will be returned according to 1 to N sequence
The series connection of wave signal, the antenna echo after series connection are converted to digital signal by analog-digital converter, and FPGA is according to shooting sequence and reception
The each channel echo-signal of sequence notation, the content of label are that the antenna echo in the channel is a with which by which transmitter
What receiver generated, microcomputer is according to the every channel antenna echo of the corresponding pickup of the information marked and is sent to corresponding channel number
It shows and exports according to display window.
The present embodiment also discloses a kind of series connection multichannel array Ground Penetrating Radar sequential control method, and this method includes triggering
The pickup of the antenna echo of the distribution and corresponding channel of signal.
The distribution of trigger signal is will to emit trigger signal by control gating switch and receive trigger signal according to user
Desired order-assigned is to specified transmitter and receiver.
The pickup of the antenna echo of corresponding channel is by FPGA first to concatenated antenna echo signal subsection, then is marked logical
Road information, microcomputer are corresponded to pick up every channel antenna echo and be sent to corresponding channel data according to the information marked and be shown
Window.
Specifically, microcomputer issues parameter to FPGA, this parameter includes channel number, shooting sequence, reception
Sequence and the relevant configuration parameter in each channel (time window, scan period, number of sampling).FPGA shooting sequence parameter and
Sequence parameter is received to be handed down to transmitting gating switch respectively and receive gating switch；The relevant configured parameter in channel is handed down to step
Into control module, step motion control module generates the transmitting trigger signal sequence to match with configuration parameter and receives trigger signal sequence
Column.When synchronization signal occurs, three gating switch simultaneously operations, transmitting gating switch and reception gating switch are according to setting
Sequence will transmitting trigger signal and receive trigger signal is assigned in specified transmitter and receiver, echo gating switch according to
1 to N sequence connects echo-signal, and the antenna echo after series connection is converted to digital signal by analog-digital converter, FPGA according to
Shooting sequence and the reception each channel echo-signal of sequence notation, the content of label are that the antenna echo in the channel is a by which
What transmitter and which receiver generated, microcomputer picks up every channel antenna echo simultaneously according to the information marked is corresponding
It is sent to corresponding channel data display window.
As shown in Fig. 2, the parameter that step motion control module is issued according to microcomputer generates transmitting trigger signal sequence respectively
Column and reception trigger signal sequence receive triggering and believe wherein transmitting trigger signal sequence is composed in series by N group transmitting trigger signal
Number sequence receives trigger signal by N group and is composed in series.When synchronization signal occurs, emit gating switch respectively by first group of transmitting
Trigger signal distributes to transmitter 1, and second group of transmitting trigger signal distributes to transmitter 2, and so on N group transmitting triggering letter
Number distribute to transmitter N, similarly receive gating switch also and will receive trigger signal and distribute in this manner, after distributing in this way must:
One channel is made of transmitter 1 and receiver 1, and two channels are made of transmitter 2 and receiver 2, and so on N channel by emitting
Machine N and receiver N composition.Echo gating switch is sent and analog-to-digital conversion according to antenna echo is together in series from 1 to N channel sequence
Device.Concatenated antenna echo is divided into N sections in sequence as mark using synchronization signal and picked up by microcomputer, and each section i.e.
For the antenna echo in each channel, the antenna echo in each channel is then sent to corresponding channel data display window again.
Above-mentioned is the working principle of transmitter and receiver according to one-to-one correspondence sequence, any transmitter and any receiver
Corresponding working principle is as follows: for example, the array antenna of a four-way, it is desirable that transmitter 1 and receiver 2 form one and lead to
Road, transmitter 2 and receiver 3 form a channel, and transmitter 3 and receiver 4 form a channel, transmitter 4 and receiver 1
Form a channel.Microcomputer is given according to the job order and channel configuration parameter of required transmitter and receiver
Shooting sequence parameter and reception sequence parameter are handed down to transmitting gating switch and receive gating switch by FPGA, FPGA；Channel
Relevant configured parameter is handed down to step motion control module, and step motion control module generates one and is composed in series by 4 groups of transmitting trigger signals
Emit trigger signal sequence and one is composed in series reception trigger signal sequence by 4 groups of reception trigger signals, synchronization signal occurs
When, transmitting gating switch distributes first group of transmitting trigger signal to transmitter 1, and second group is distributed to transmitter 2, and third component is matched
To transmitter 3, the 4th group is distributed to transmitter 4.It receives gating switch and first group of reception trigger signal is distributed into receiver 2,
Second group is distributed to receiver 3, and third component dispensing receiver 4, the 4th group is distributed to receiver 1.After distributing in this way: first
Channel is made of transmitter 1 and receiver 2, and second channel is made of transmitter 2 and receiver 3, and third channel is by 3 He of transmitter
Receiver 4 forms, and fourth lane is made of transmitter 4 and receiver 1.Echo gating switch with synchronization signal be mark according to from
Antenna echo is together in series by one to four channel sequence to be sent and analog-digital converter.FPGA using synchronization signal as mark in sequence
Concatenated antenna echo is divided into 4 sections, respectively corresponds the antenna echo in 4 channels, path marking is added to every section of antenna echo,
Mark content are as follows: the antenna echo of first passage is generated by transmitter 1 and receiver machine 2, and the antenna echo of second channel is by sending out
It penetrates machine 2 and receiver 3 generates, the antenna echo of third channel is generated by transmitter 3 and receiver 4, and the antenna of fourth lane returns
Wave is generated by transmitter 4 and receiver 1.Microcomputer picks up each channel antenna echo simultaneously according to the information marked is corresponding
It is sent to corresponding channel data display window.Working principle as described above similarly can get and control array in any order
Middle transmitting unit and the embodiment of receiving unit work.
Claims (1)
1. a kind of series connection multichannel array Ground Penetrating Radar sequential control method, when using a kind of series connection multichannel array Ground Penetrating Radar
Sequence control device, the device include: microcomputer, the step motion control mould being electrically connected by FPGA with microcomputer
Block, after microcomputer issues channel relevant configured parameter to FPGA, FPGA is shooting sequence parameter and receives sequence parameter point
It is not handed down to transmitting gating switch and receives gating switch, the relevant configured parameter in channel is handed down to step motion control module, walks
The transmitting trigger signal sequence to match with the channel relevant configured parameter is generated into control module and receives trigger signal sequence,
Wherein transmitting trigger signal sequence is composed in series by transmitting trigger signal more than two, receives trigger signal sequence by more than two
Trigger signal is received to be composed in series；The transmitting gating switch for being connected with two or more transmitters is electrically connected, from FPGA with FPGA
Synchronization signal when occurring, the shooting sequence that transmitting gating switch is set according to FPGA distributes each transmitting trigger signal to corresponding
Transmitter, above-mentioned transmitter are electrically connected with array antenna, be connected with the reception gating switch of two or more receivers with
When FPGA electrical connection, the synchronization signal from FPGA occur, receiving the reception sequence that gating switch is set according to FPGA will respectively be connect
It receives trigger signal to distribute to corresponding receiver, above-mentioned receiver is electrically connected with array antenna, and echo gating switch is according to suitable
Sequence connects the echo-signal from receiver, and the antenna echo after series connection is converted to digital signal, FPGA by analog-digital converter
According to shooting sequence and each channel echo-signal of sequence notation is received, the content of label is that the antenna echo in the channel is by the
What several transmitters and which receiver generated, microcomputer picks up every channel antenna time according to the information marked is corresponding
Wave is simultaneously sent to the display output of corresponding channel data display window；The quantity of the transmitter and receiver is identical, be greater than etc.
In 2, it is less than or equal to 8, which comprises the steps of:
(1) microcomputer issue channel number, shooting sequence, reception sequence and the relevant configuration parameter in each channel to
FPGA, FPGA shooting sequence parameter and receive sequence parameter respectively be handed down to transmitting gating switch and receive gating switch,
The parameter received is handed down to step motion control module, and step motion control module generates the transmitting trigger signal to match with configuration parameter
Sequence and reception trigger signal sequence, wherein transmitting trigger signal sequence is composed in series by N group transmitting trigger signal, reception triggering
Signal sequence receives trigger signal by N group and is composed in series；
(2) FPGA controls gating switch by synchronization signal according to channel number set by user, shooting sequence and reception sequence
The distribution for realizing trigger signal, when synchronization signal occurs, transmitting gating switch respectively distributes first group of transmitting trigger signal
To transmitter 1, second group of transmitting trigger signal distributes to transmitter 2, and so on N group transmitting trigger signal distribute to transmitting
Machine N similarly receives gating switch and also distributes reception trigger signal in this manner, after distributing in this way: a channel is by emitting
Machine 1 and receiver 1 form, and two channels are made of transmitter 2 and receiver 2, and so on N channel by transmitter N and receiver N
Composition；
(3) echo gating switch is together in series according to from 1 to the signal that N channel sequence receives receiver through analog-digital converter
It is sent into microcomputer, FPGA is according to shooting sequence and receives each channel echo-signal of sequence notation, and the content of label is should
The antenna echo in channel is generated by which transmitter and which receiver, and microcomputer is according to the information marked
It is corresponding to pick up every channel antenna echo and be sent to the display output of corresponding channel data display window, in step (1), each channel
Relevant configuration parameter includes time window, and the scan period, number of sampling, in step (1)-(3), the numerical value of N is equal, is big
In the natural number equal to 2, less than or equal to 8.
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| CN108181846B (en) * | 2017-12-12 | 2020-02-18 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Multi-array radar module time sequence control method |
| CN109683137B (en) * | 2018-12-24 | 2022-10-21 | 中国电子科技集团公司第二十研究所 | Multi-channel synchronization method applied to phased array radar |
| CN109633758B (en) * | 2018-12-25 | 2020-11-06 | 北京华航无线电测量研究所 | Multi-frequency composite ground penetrating radar system |
| CN111029791A (en) * | 2019-12-20 | 2020-04-17 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | Tightly coupled dipole reflection antenna array |
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